EKMM401VSN560MQ20T

Introduction

Aluminum electrolytic capacitors have a wide variety of applications and are common in consumer electronics. They provide very high capacitance for a low cost, and are therefore useful for smoothing power supplies as well as for storing large amounts of energy. This article focuses on EKMM401VSN560MQ20T, a particular type of aluminum electrolytic capacitor.

EKMM401VSN560MQ20T

EKMM401VSN560MQ20T is a type of Series-connected Epoxy-Coated Aluminum Oxide (SEOA) electrolytic capacitor. It is constructed from an anode of aluminum foil in an electrolyte of sulfuric acid. The anode is separated from the cathode by a dielectric layer of oxidized aluminum oxide known as an Aluminum Oxide Film (AOT). The electrolyte can be an organic or inorganic compound, and the dielectric layer can be either solid or porous.

EKMM401VSN560MQ20T is characterized by a maximum working voltage of 450V, an equivalent series resistance (ESR) of 0.1 ohm, and a maximum ripple current rating of 560mA. It has a temperature coefficient of ±15 % and a dielectric absorption ratio (DAR) of 10%. It is available in a variety of sizes ranging from 10mm to 25mm in diameter and 5mm to 10mm in length.

Application Field

EKMM401VSN560MQ20T is an ideal choice for use in applications requiring high pulse current capabilities and excellent reliability. It can be found in a variety of applications, including PCs, LCD displays, and household appliances, as well as in industrial equipment such as uninterruptible power supplies (UPS) and frequency converters. Additionally, these capacitors can be used in switch-mode power supplies (SMPSs) and motor drives, as well as in automotive applications.

Working Principle

Under normal conditions, an EKMM401VSN560MQ20T capacitor behaves like a constant voltage source. As current is drawn from the capacitor, the voltage across it decreases. The capacitor’s voltage follows an exponential decay, which means that after a certain period of time, the voltage across the capacitor will become constant. As the capacitance increases, the RC time constant increases accordingly and the voltage changes more slowly.

It is important to note that the frequency response of an electrolytic capacitor is not the same as that of a standard non-electrolytic capacitor. In other words, electrolytic capacitors have a greater capacitance value at low frequencies and a smaller capacitance value at high frequencies.

The EKMM401VSN560MQ20T capacitor also has a self-healing property. In a nutshell, this means that if it is subjected to an overload, the dielectric layer will break down and release its internal energy, incinerating any impurities in the process. This helps to minimize the risk of catastrophic failure.

Conclusion

The EKMM401VSN560MQ20T aluminum electrolytic capacitor is an ideal choice for applications which require high pulse current capabilities and excellent reliability. It is characterized by a maximum working voltage of 450V, an ESR of 0.1 ohm, and a maximum ripple current rating of 560mA. It also has a self-healing property which helps to minimize the risk of catastrophic failure. With this in mind, EKMM401VSN560MQ20T is an excellent choice for a wide range of applications.